Setup advice for blu ray and new tv

I just purchased a Sony Bravia XR-77ACL. I have an Arc and two Era 300 speakers. When streaming through my 4k Apple TV, everything sounds great; however, my Sony Blu-Ray player has some trouble. While I found that a few discs are labelled as Dolby Atmos and sound great, most Blu Rays play PCM 2.0. Is there any setting I can get that would help engage the Era speakers and improve audio? I’m using 2.1 hdmi cables all around and the Arc is connected to the EArc port.

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You are likely playing a DTS-encoded Blu-ray disc with a DTS-HD Master Audio or DTS:X audio track. Sonos doesn’t support these audio formats. You have two options:

Set your Blu-ray player to convert DTS to PCM so you get lossless PCM 5.1 audio from the Blu-ray disc. Use these settings on the Blu-ray player:

Digital Audio Output: PCM
BD Secondary Audio: Off
Audio DRC: Off

Set your Blu-ray player to play the core lossy DTS Digital Surround audio track from the disc. Use these settings on the Blu-ray player:

Digital Audio Output: Auto
BD Secondary Audio: On
Audio DRC: Off

Also be sure to set the TV to these settings for the best quality audio from any source:

Digital Audio Out: Auto 1
Dolby Digital Plus Output: Dolby Digital Plus
Pass Through Mode: Auto
eARC Mode: Auto

Thanks. I’ll try all of that. I have a Sony blu ray player. It doesn’t have a setting for BD Secondary Audio. I made sure on all the other settings. What is the difference I’d look for on the disc between option #1 and option #2.

What specific model Blu-ray player do you have?

You can use either option for all DTS-encoded discs. Try it both ways and choose which sounds better to your ears.

It's a Sony BDP-S5500.

The BD Secondary Audio setting should be called BD Audio Mix Setting on your player.

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